but this is speculation only
The front of the cap features a machine embroidered Wehrmacht eagle patch in white threading
engraved with the inscription "Presented To Maj
Austrian Army Badge 1915 - in gilt and enamels
illustrating a large "W" (Wilhelm cypher) fronting an anchor
Six First War Period European Military Buttons Auction but this is speculation onlyIncludes: a Prussian Button with an Eagle Bearing "FR" on its Chest (brass, maker marked "EXTRA FEIN" (Extra Fine) and maker marked (F. W. Assmann & Shne, Ldenscheid) on the reverse, 29. 5 mm, intact loop); two Prussian Army Buttons Crown Buttons (bronze, one is maker marked "G. G.", the other is unmarked, 20. 5 mm and 20. 2 mm respectively, intact loops); a Russian Imperial Navy Button Bearing an Anchor (silvered copper, maker marked in Russian " "